Multiple Choice
Which of the following is the correct chemical formula for iron(III) fluoride?
109
views
3. Chemical Reactions
Naming Ionic Compounds
Multiple Choice
Which of the following is the correct chemical formula for copper(I) iodide?
A
Cu2I2
B
CuI
C
Cu2I
D
CuI2
Verified step by step guidance1
Identify the oxidation state of copper in copper(I) iodide. The Roman numeral I indicates that copper has a +1 charge (Cu⁺).
Determine the charge on the iodide ion. Iodide (I⁻) has a charge of -1.
Balance the charges to form a neutral compound. Since Cu⁺ and I⁻ have charges of equal magnitude but opposite sign, they combine in a 1:1 ratio.
Write the chemical formula by combining one Cu⁺ ion with one I⁻ ion, resulting in CuI.
Verify that the formula CuI is electrically neutral and correctly represents copper(I) iodide.
Related Videos
Related Practice
